package servlet;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebFilter("*")
public class IPFilter implements Filter{

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
			throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) arg0;
		HttpServletResponse resp = (HttpServletResponse) arg1;
		resp.setCharacterEncoding("utf-8");
		resp.setContentType("text/html;charset=utf-8");
		if (req.getRemoteHost().equals("172.18.4.169")) {
			resp.getWriter().write("滚");
			resp.getWriter().flush();
		}else {
			arg2.doFilter(req, resp);
		}
		
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		
	}

}
